The pirate life isn't all raid and plunder, a savvy pirate needs to know how to get the most coin for his/her loot. After all, there are upgrades to get, bases to be built and repairs to be made. Maybe you want to build or buy another ship? Well the crew will need to be paid.
So what is the secret to trading? Buy low(green), Sell high(red) easy ay? But don't forget about the cannonballs. Well where would we be without cannonballs ;-)
Trading breakdown (wip) Here